Begell House Inc.
International Journal on Algae
IJA
1521-9429
10
2
2008
Peculiarities of ecology and distribution of unicellular soil alga Eustigmatos magnus (J.B. Petersen) Hibberd () in Southern Ural (Russia)
105-116
10.1615/InterJAlgae.v10.i2.10
L. M.
Safiulina
Department of Botany, Bashkir State Pedagogical University, 3a, Oktiabrskoi Revolutsii St., 450000 Ufa, Bashkortostan, Russia
R. R.
Kabirov
Department of Botany, Bashkir State Pedagogical Institute, За, Octyabr'skay Revolyutsii St., 450025 Ufa, Bashkortostan, Russia
Original and literature data on the distribution of soil alga Eustigmatos magnus (J.B. Petersen) Hibberd 1981 (syn. Pleurochloris magna J.B. Petersen 1932) and how different ecological factors (both natural and anthropogenous) affect it are analyzed and discussed.
Microphytobenthos of Southern Baikal (Russia)
117-130
10.1615/InterJAlgae.v10.i2.20
G. V.
Pomazkina
Limnological Institute, Siberian Department of the Russian Academy of Sciences, 3, Ulan-Batorskaya St., 664033 Irkutsk, Russia
Ye. V.
Rodionova
Limnological Institute, Siberian Department of the Russian Academy of Sciences, 3, Ulan-Batorskaya St., 664033 Irkutsk, Russia
O. M.
Mushnikova
Limnological Institute, Siberian Branch of Russian Academy of Sciences, 3, Ulan-Batorskaya St., 664033 Irkutsk, Russia
Quantitative parameters of microphytobenthos have been obtained on the basis of long-term studies. Dominant structures of communities, seasonal, inter-annual and zonal changes of number and biomass of microphytobenthos under different ecological conditions of Southern Baikal have been analyzed and are caused both by changes in species diversity of algal communities and environmental factors. In seasonal dynamics of microphytobenthos number and biomass spring and summer peaks (with prevalence of the last one) are present.
Optimization of the nutrient medium composition for cultivation of Spirulina platensis Geitl. (Cyanophyta) by the mathematical method of experimental design
131-140
10.1615/InterJAlgae.v10.i2.30
V. F.
Rudik
Moldova State University, Laboratory of Photomicrobiology, 65a, Kogelnichany St., and Institute of Microbiology and Biotechnology, National Academy of Sciences of Moldova Republic, 1, Akademicheskaya St., MD 2009 Kishinev, Moldova
V. L.
Bul'maga
State University of the Moldova Republic, 60, Mateyevicha St., MD 2009 Chisinau , Moldova
S. V.
Maksakova
State University of the Moldova Republic, 60, Mateyevicha St., MD 2009 Chisinau , Moldova
The full factorial experimental design used for optimization of the nutrient medium composition for cultivating Spirulina platensis Geitl. Optimization was carried out. The introduction into the medium of selenium (Na2SeO3), germanium (GeO2), and iodine (KI) considerably improved the nutritive value of the biomass. Productivity on the optimized medium made up 1.55-1.60 g/L for six days of cultivation.
Changes in relative abundance of phytoplankton in arsenic contaminated waters at the Ron Phibun district of Nakhon Si Thammarat province, Thailand
141-162
10.1615/InterJAlgae.v10.i2.40
Weeradej
Meeinkuirt
Mahidol University, Nakhonsawan Campus
W.
Sirinawin
Division of Environmental Science, Faculty of Science, Ramkhamhaeng University, Bangkapi, 10240 Bangkok, Thailand
S.
Angsupanich
Department of Aquatic Science, Faculty of Natural Resources, Prince of Songkla University, Hat Yai, 90112 Songkhla, Thailand
P.
Polpunthin
Department of Biology, Faculty of Science, Prince of Songkhla University, Hat Yai, 90112 Songkhla, Thailand
This research project examines the changes in relative abundance of phytoplankton in arsenic contaminated waters at the Ron Phibun district of Nakhon Si Thammarat Province during July 2004 to June 2005. The chosen locations were four dredge ponds (abandoned tin mines) at Ron Phibun and Hintok sub-districts and two in dug ponds for community use at Saothong and Khuankoey sub-districts. The dominant phytoplankton in all study locations were cyanobacteria except for one location in the Saothong sub-district. The results demonstrated that there were major seasonal variations in phytoplankton abundance and in dominant genera associated with all sampling locations, and these were particularly evident during the rainy period. In general, all sampling locations showed a decrease in total abundance during the rainy season, but changes to the dominant population at any one location were different from all the others.
Algae of Azovo-Syvashsky National Nature Park (Ukraine)
163-178
10.1615/InterJAlgae.v10.i2.50
O. M.
Vinogradova
M.G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine,
Tereschenkivska Str. 2, Kiev 01601, Ukraine
T. M.
Darienko
N.G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine, 2, Tereshchenkovskaya St., 01001 Kiev, Ukraine
The algal flora of sites differing in soil salinities, types of vascular vegetation (true-halophytic; saline meadow, and saline steppe) or having no vascular plants was investigated in a hypersaline ecosystem of Azovo-Syvashsky National Nature Park (Kherson Region, Ukraine). Ninety-two species were revealed (Cyanoprokaryota − 49, Chlorophyta − 28, Bacillariophyta − 12, Xanthophyta − 2, and Eustigmatophyta − 1). Cyanophytes in the studied environments led both in species diversity and abundance. The richest and most diverse composition of algae was recorded on sites of wet gleyic solonchaks with sparce herbaceous and bushy vegetation (70 species). It was revealed that with increasing density of plant cover the share of eucaryotic algae and mean number of species per sample increased both in soil samples and algal growths on its surface. New and noteworthy records for the Ukraine reveal 14 taxa from Cyanoprokaryota (7 species), Chlorophyta (5), and Xanthophyta (2). Xanthophytes were recorded in saline soils of the Ukraine for the first time.
Coralline red algae from the Early Pliocene Shagra formation of Wadi Wizer, Red Sea coast, Egypt, and their implications in biostratigraphy and paleoecology
179-208
10.1615/InterJAlgae.v10.i2.60
M. M.
Hamad
Geological and Techniquical Institute, P.O. 2193 AlMadinah, Saudi Arabia
Coralline red algae are highly abundant and well diversified in the well exposed carbonate deposits of the Early Pliocene Shagra Formation at Wadi Wizer, Red Sea coast, Egypt. Lithostratigraphically, the Shagra Formation unconformably overlies the Late Miocene Marsa Alam Formation and underlies the Quaternary deposits. This formation included two members, from base to top: 1) Dashet El Dabaa Member; 2) Sharm El Arab members. The coralline red algae and foraminifera are important constituents of these deposits and highly abundant. This carbonate facies is dominated by different assemblage of coralline red algae in the form of in situ crusts, rhodoliths, fragments and corals, bivalve shell fragments, bryozoans, benthonic and palnktonic foraminifera. The systematic study and the taxonomic investigations carried out on the coralline red algae, twenty one coralline algal species were recognized and described for the first time (most of which belonged to nongeniculated coralline algae, they are represented by: seven nongeniculated coralline algal genera in the form of Lithothamnion, Mesophyllum, Spongites, Lithophyllum, Neogoniolithon, Sporolithon, and Lithoporella). The geniculated coralline algae is described and represented by Corallina sp. One species of green algae (Chlorophyaceae) depicted in the genus Halimeda sp. On the basis of the stratigraphic vertical distribution of these coralline red algae, the studied Early Pliocene sequence could be subdivided into two local coralline algal assemblage zones from base to top: Neogoniolithon sp. /Mesophyllum lemoinaea Assemblage Zone and Lithothamnion saipanense / Lithophyllum prelichenoides Assemblage Zone. Detailed microfacies analysis of the Early Pliocene Shagra Formation led to the recognition of eight microfacies types (six of carbonate facies and two of siliciclastic facies) on the basis of Lithological characters, faunal content and sedimentary strutcures, indicating that the Early Pliocene sequence was deposited in transgressive − regressive cycles ranged from near shore, warm shallow inner to middle neritic marine water environments with development of reefal facies. Paleoecologically, it is noted that both of Lithophullum, Neogoniolithon and Spongites are dominated in the reefal carbonate facies. However, the Mesophyllum, Lithothamnion and Sporolithon are main components of the relatively more shallower carbonate facies.